Pluto is still considered a planet in Ithaca, New York.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

A sewing machine tycoon built this miniature castle for the people and to beautify a lakeshore.

An isolated beacon with a history of grisly murder and a view of some of literature's greatest inspirations.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

A perfect replica of the beloved show's first set.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

The birthplace of America's favorite fruit-flavored mystery dessert.

One Brooklyn man's collection of life-size fiberglass statues has taken over his entire yard.

A forsaken wonder in the middle of the East Side neighborhood.

Historical figures from New York City's Catholic community reside in Midtown.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

Relics given to a Manhattan church to avoid seizure by the Italian government.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

This innocent-looking townhome is actually a subway exit.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

The loneliest island in New York.

Nondescript elevator doors open to reveal a stunning, surreal world.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.